Just my 2 cents…
Svt4Him, I think that’s a bit different, because in your case, the person can actually do something about it… they can convert to Christianity. What would be unfair (IMHO) and more akin to the presidential situation is if a person can work there ONLY if he or she was BORN a Christian. If, say, somebody was born into an atheist background and then raised from age 5 onwards to be a devout Christian, I think he/she should be allowed to work there (unless your oganization has something against that which I do not understand… if so, I apologize).
In the case of presidents, naturalized citizens are prohibited from running simply because they were born in a different country… an act they had absolutely no control or choice over, just like their race or gender. They can be just as loyal, or even more so, than any natural-born American and they could devote their entire lives for their country (the USA, not wherever they immigrated from) and it would all be meaningless. Basically, it’s saying “I know you’re a good, loyal citizen like the others in this land and you may have much for your country… but just because you were born somewhere else, you ain’t gonna have a chance at all… nya nya nya.” How is that not discrimination?
It might be true that most immigrants are more loyal to their home countries than to the USA, but what about those who really are loyal to the USA? If they can prove it to the nation, and the nation agrees with them (by being willing to vote for them), then why should they automatically be assumed to not be American enough by the Constitution?
It’s unfair to exclude people just because they represent a greater risk. If that were a good enough reason, where do you stop? Do you start preventing people with Middle-Eastern-sounding names from running for president? And then after that, anybody with Middle-Eastern friends? The risk is always there. Even natural born citizens can become spies for other countries. That’s what the democratic process is for… letting people vote for whoever they trust and think will make a good president. If somebody has had shady dealings with terrorist organizations in the past, then they simply wouldn’t win many votes. The people should be allowed to decide for themselves whether a canditate is trustworthy… why does the constitution have to limit their choices for them?
But of course, since it is a democracy, the Constitution can be amended to change that… I hope it will be, personally I wonder how long before we see our first, say, Iraqi-American female president…